Any one running there car on bio diesel at all? Did you notice any difference in the car after running the car on bio diesel at all?

Is there a sign on the inside of the fuel filler flap that says No Bio Diesel?

cant remember off the top of my head

Is there a sign on the inside of the fuel filler flap that says No Bio Diesel?

Yup!

Is there a sign on the inside of the fuel filler flap that says No Bio Diesel?

Yep on my vrs

If it's a PD, definitely not.

Mine one does say "NO BIODIESEL" too. I've heard that it's bad for injectors.

Anyway I wouldn't try.

I looked into this a while ago as I would have made my own bio but it seems to cause issues with seals in the pumps and injectors. All UK vehicles are warranted to 5% bio and most if not all diesel in the UK already has a maximum of 7% in it.

It may be OK with more but without proper tests there is always the chance of an expensive repair bill.

why risk it

 

save a few pence on fuel and spend thousands to fix it

 

buy an old banger if you want to use it

Sorry, I realise this is an old thread. I was searching to see if anyone has converted their car to run on 100% biodiesel and found this thread.

 

Biodiesel eats rubber, so it'll kill your tank fuel pump, probably some parts of the hoses on the way to the front, the seals in the injectors and (if such a thing exists on this car) the high pressure pump too. I'm going to try to either find or put together a definitive list of rubber parts/seals that need changing for silicone alternatives so that I can run 100%.

Sorry, I realise this is an old thread. I was searching to see if anyone has converted their car to run on 100% biodiesel and found this thread.

Biodiesel eats rubber, so it'll kill your tank fuel pump, probably some parts of the hoses on the way to the front, the seals in the injectors and (if such a thing exists on this car) the high pressure pump too. I'm going to try to either find or put together a definitive list of rubber parts/seals that need changing for silicone alternatives so that I can run 100%.

PD or CR engine? IIRC PD don't like biodiesel because of the different fluid properties, not because of seals.

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Mine is a CR engine.

 

The different properties I've usually heard of are BD being an uncannily strong solvent, so strong that it eats the rubber seals. It might be that it's a different viscosity, so you get over/under fuelling or similar?

When I was in army...government decided to switch for Bio Diesel...boy I became a best mechanic of trucks.

 

Fuel tank was like swamp...I think there was a new evolution of life.

 

That was old school truck, which can run without engine oil and almost on anything that combust.

 

I wonder what will happen with modern car with extreme sensitivity for anything. I think you are heading for disaster in long term.

We make our own biodiesel from used vegetable oil and I have been running all our cars on it for the past 15 years: Skoda Octavia Scout, Citroen Saxo, Isuzu Trooper.
All three are just fine, no problems at all. The only difference is that we change the fuel filter twice a year instead of just once a year.

Yes, biodiesel will make natural rubber crumble, but no cars have used natural rubber for at least 20 years.
Some fuel pumps seem unreliable in biodiesel. We always use B
My understanding is that 'common rail' type of engines are unsuitable for biodiesel. That is because they continuously compress and decompress the fuel prior to injecting just 10% of it into the engine. That means that on average each bit of fuel is compressed and decompressed 10 times before being injected and that can cause biodiesel to separate into parts and form fat globules.
So rule no 1: don't use in common rail style engines.
Unfortunately, they are cheaper to manufacture, so are quite prolific.
 

Skoda Octavia has Common Rail engines from 2013 onwards

12 minutes ago, PaulTNC said:

Skoda Octavia has Common Rail engines from 2013 onwards

 

Some Octavia models had a CR engine long before that. Pretty sure the vRS first got one back in 2008...

Edited 15 May, 20197 yr by langers2k

@PaulTNC Welcome.

 

Who is the we, family or a business, and in which country are you producing your own Bio from WVO,

& where do you source the WVO?

Langers - that's true, but from 2013 all have CR engines.

Skoffski, personal and farm business in Cornwall (even our tractor and deliveries) and we get the oil from a couple of restaurants.

 

Just found the official stance on biodiesel from VW/Skoda here: http://www.volkswagen.co.uk/assets/common/pdf/general/biodiesel.pdf

 

Quote

• Vehicles that do not have the factory preparation for Biodiesel cannot use 100% Biodiesel.
• Vehicles fitted with a Common Rail fuel injection system cannot use 100% Biodiesel.
• Vehicles fitted with Pumpe-Duse injectors cannot use 100% Biodiesel.
• Vehicles fitted with a Diesel Particulate Filter (DPF) cannot use 100% Biodiesel, however EN590 containing up to 7% Biodiesel is approved for use with DPF.
• 100% Biodiesel vehicles cannot be used in temperatures below -10°C.
• The use of 100% Biodiesel may slightly reduce the driving performance of the vehicle and slightly increase the fuel consumption.
• The use of 100% Biodiesel may increase the frequency of the maintenance schedule on the vehicle.

 

Looking at the spreadsheet, 100% RME can be used in:

- MK1 Octavia's built before 26/06/2006

- MK2 Octavia's with PR-2G0

Currently using biodiesel in 1.9 pd 07 octavia for a few months now and so far it's running good. Can feel a little loss in power but drives the same.